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    <li><a href="index.html">PHP Manual</a></li>
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    <li>Get the last error message</li>
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  <div id="layout-content"><div id="function.odbc-errormsg" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">odbc_errormsg</h1>
  <p class="verinfo">(PHP 4 &gt;= 4.0.5, PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">odbc_errormsg</span> &mdash; <span class="dc-title">Get the last error message</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-function.odbc-errormsg-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>odbc_errormsg</strong></span>(<span class="methodparam"><span class="type">?</span><span class="type"><span class="type">resource</span><span class="type"></span></span> <code class="parameter">$odbc</code><span class="initializer"> = <strong><code>null</code></strong></span></span>): <span class="type">string</span></div>

  <p class="simpara">
   Returns a string containing the last ODBC error message, or an empty
   string if there has been no errors.
  </p>
 </div>

 <div class="refsect1 parameters" id="refsect1-function.odbc-errormsg-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    
     <dt>
<code class="parameter">odbc</code></dt>

     <dd>

      <p class="para">ODBC 连接标识符，详见
<span class="function"><a href="function.odbc-connect.html" class="function">odbc_connect()</a></span>。</p>
     </dd>

    
   </dl>

  </p>
 </div>

 <div class="refsect1 returnvalues" id="refsect1-function.odbc-errormsg-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   If <code class="parameter">odbc</code> is specified, the last state
   of that connection is returned, else the last state of any connection
   is returned.
  </p>
  <p class="para">
   This function returns meaningful value only if last odbc query failed
   (i.e. <span class="function"><a href="function.odbc-exec.html" class="function">odbc_exec()</a></span> returned <strong><code>false</code></strong>).
  </p>
 </div>


 <div class="refsect1 changelog" id="refsect1-function.odbc-errormsg-changelog">
  <h3 class="title">更新日志</h3>
  <table class="doctable informaltable">
   
    <thead>
     <tr>
      <th>版本</th>
      <th>说明</th>
     </tr>

    </thead>

    <tbody class="tbody">
     <tr>
      <td>8.0.0</td>
      <td>
       <code class="parameter">odbc</code> is nullable now.
      </td>
     </tr>

    </tbody>
   
  </table>

 </div>


 <div class="refsect1 seealso" id="refsect1-function.odbc-errormsg-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.odbc-error.html" class="function" rel="rdfs-seeAlso">odbc_error()</a> - Get the last error code</span></li>
    <li class="member"><span class="function"><a href="function.odbc-exec.html" class="function" rel="rdfs-seeAlso">odbc_exec()</a> - Directly execute an SQL statement</span></li>
   </ul>
  </p>
 </div>

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